530. Briefly: Adding a new entry to Default applications in Gnome 3. Example using Firefox

I'm tired of google chrome/chromium -- for some reason more and more websites are rendering incorrectly in it. Part of the reason is because I refuse to allow just any website to set cookies, but that can't explain all instances (e.g. I'm having major issues with any elsevier journals). I'm also tired of google in general, especially after having spent some time with google plus.
Anyway, I recently showed how to install firefox: http://verahill.blogspot.com.au/2013/11/528-briefly-setting-up-64-bit-pre-built.html

I'll show here to set it as a selectable application in the System Settings/Details

At the beginning the following selections are available:

The key to adding a new 'Default Application' is simply making sure that it appears in the MIME file type associations. And one way to do that is to create a .desktop file and use update-desktop-database to read it:

sudo cp /usr/share/applications/iceweasel.desktop /usr/share/applications/firefox.desktop
sudo sed -i 's/Iceweasel/Firefox/g' /usr/share/applications/firefox.desktop
sudo sed -i 's/Exec=iceweasel/Exec=firefox25/g' /usr/share/applications/firefox.desktop
sudo sed -i 's/Icon=iceweasel/Icon=firefox/g' /usr/share/applications/firefox.desktop
sudo update-desktop-database

Once that's done we get the following:

 You can then set up a shortcut launcher, e.g.

(you could of course just have it execute the command directly, but what's the challenge in that?)

529. Briefly: Error Writing spool: NT_STATUS_DISK_FULL

I recently had trouble printing on a networked printer at work, where we use 'Papercut' to share printers -- basically you submit your job, give your credentials, then run over to a printer and release the job.

Anyway, I suddenly had issues printing:

The solution:
I'm not entirely sure what fixed it, but here's what I did

lpstat showed a number of jobs that had been submitted to the printer, but couldn't be released:

me@beryllium:~/Downloads$ lpstat
global-mfp-1166         me              591872   Mon 11 Nov 2013 12:36:29 EST
global-mfp-1167         me              993280   Mon 11 Nov 2013 12:36:44 EST
global-mfp-1168         me             2014208   Mon 11 Nov 2013 12:36:59 EST
global-mfp-1169         me              871424   Mon 11 Nov 2013 12:37:17 EST
global-mfp-1170         me              573440   Mon 11 Nov 2013 12:37:31 EST
global-mfp-1171         me             1199104   Mon 11 Nov 2013 12:37:51 EST
global-mfp-1172         me              183296   Mon 11 Nov 2013 12:38:02 EST
global-mfp-1173         me              491520   Mon 11 Nov 2013 12:38:19 EST
global-mfp-1174         me             2035712   Mon 11 Nov 2013 12:38:38 EST
global-mfp-1175         me             2035712   Mon 11 Nov 2013 12:39:54 EST
global-mfp-1176         me              635904   Mon 11 Nov 2013 12:41:54 EST
global-mfp-1177         me              148480   Mon 11 Nov 2013 16:29:58 EST

I preceded to cancel all the jobs:

me@beryllium:~/Downloads$ cancel global-mfp-1166
me@beryllium:~/Downloads$ lpstat
global-mfp-1167         me              993280   Mon 11 Nov 2013 12:36:44 EST
global-mfp-1168         me             2014208   Mon 11 Nov 2013 12:36:59 EST
global-mfp-1169         me              871424   Mon 11 Nov 2013 12:37:17 EST
global-mfp-1170         me              573440   Mon 11 Nov 2013 12:37:31 EST
global-mfp-1171         me             1199104   Mon 11 Nov 2013 12:37:51 EST
global-mfp-1172         me              183296   Mon 11 Nov 2013 12:38:02 EST
global-mfp-1173         me              491520   Mon 11 Nov 2013 12:38:19 EST
global-mfp-1174         me             2035712   Mon 11 Nov 2013 12:38:38 EST
global-mfp-1175         me             2035712   Mon 11 Nov 2013 12:39:54 EST
global-mfp-1176         me              635904   Mon 11 Nov 2013 12:41:54 EST
global-mfp-1177         me              148480   Mon 11 Nov 2013 16:29:58 EST
me@beryllium:~/Downloads$ cancel global-mfp-1167
me@beryllium:~/Downloads$ cancel global-mfp-1168
me@beryllium:~/Downloads$ cancel global-mfp-1169
me@beryllium:~/Downloads$ cancel global-mfp-1170
me@beryllium:~/Downloads$ cancel global-mfp-1171
me@beryllium:~/Downloads$ cancel global-mfp-1172
me@beryllium:~/Downloads$ cancel global-mfp-1173
me@beryllium:~/Downloads$ cancel global-mfp-1174
me@beryllium:~/Downloads$ cancel global-mfp-1175
me@beryllium:~/Downloads$ cancel global-mfp-1176
me@beryllium:~/Downloads$ cancel global-mfp-1177
me@beryllium:~/Downloads$ lpstat
me@beryllium:~/Downloads$ 

That didn't remove the error message, however. Opening Printers in Gnome(3) showed that the printer with an issues was set to 'off'. Unlocking and changing it to 'on' resolved the issue.

528. Briefly: Setting up 64 bit pre-built firefox (25) binaries on debian

/usr/local/lib is just a suggestion (and probably not a very good one).

Anyway, here's the quick and easy way to get set up with 64 bit firefox. Start it by calling firefox25

mkdir ~/tmp
cd ~/tmp
wget ftp://ftp.mozilla.org/pub/firefox/releases/25.0/linux-x86_64/en-GB/firefox-25.0.tar.bz2
tar xvf firefox-25.0.tar.bz2 
cd firefox/
sudo mkdir /usr/local/lib/firefox-25.0
sudo cp * -R /usr/local/lib/firefox-25.0
sudo ln -s /usr/local/lib/firefox-25.0/firefox /usr/bin/firefox25